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Facile Synthesis of Mesoporous α-MnO2 Flower-Like Nanostructures and Their Catalytic Performance in the Degradation of Poly(ethylene terephthalate) Wastes

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A simple hydrothermal method was developed for synthesis of the flower-like α-MnO2 nanostructures composed of nanoflakes. The obtained MnO2 nanostructures have an average diameter of 300–600 nm. Surface area and pore size distribution of the flower-like nanostructures were characterized by the nitrogen adsorption–desorption isotherm measurements. The catalytic performance of the flower-like MnO2 nanostructures was evaluated in the degradation of poly(ethylene terephthalate) wastes using ethylene glycol as solvent, and the effects of various reaction conditions on the degradation were studied. FT-IR, 1H NMR and DSC were used to identify the glycolysis products. It was found that bis(2-hydroxyethyl) terephthalate monomer was dominant in the product which was effectively separated from other oligomers in quite pure crystalline form.
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Document Type: Research Article

Publication date: November 1, 2012

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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